Extended range background correction in continuum source atomic absorption spectrometry

1988 ◽  
Vol 3 (1) ◽  
pp. 155 ◽  
Author(s):  
Thomas C. O'Haver ◽  
John Carroll ◽  
Robbin Nichol ◽  
David Littlejohn
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Background Correction ◽  
Continuum Source ◽  
Extended Range

A High Speed Method of Continuous Background Correction in Atomic Absorption Spectrometry

1975 ◽  
Vol 29 (2) ◽  
pp. 154-158 ◽  
Author(s):  
T. H. Donnelly ◽  
A. J. Eccleston
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
High Speed ◽  
Broad Band ◽  
Absorption Spectrometry ◽  
Point Of View ◽  
Background Correction ◽  
Continuum Source ◽  
Continuous Background ◽  
Band Absorption

The need for background correction in atomic absorption spectrometry (AAS), particularly when graphite furnaces are used to generate the atomic vapor, is discussed. It is shown that a Beckman hydrogen arc lamp is suitable as a continuum source from the point of view of noise, extent of its useful broad band absorption, and light intensity for background-corrected absorption (BCA) measurements over the wavelength range examined (200 to 460 nm). The standard method of determining tin present in rock samples as cassiterite, by extraction as the volatile tin iodide, was examined by flameless AAS with BCA. The method corrects for the large nonatomic absorption present, it is rapid, and it enables easier examination of solutions containing low concentrations of tin (detection limit for a 1 g starting sample is ∼1 jug tin).

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